Window-lock.



W. D. KENNEDY.

WINDOW LOCK.

APPLICATION FILED mu: I. 1915-.

Patentd Mar. 28,1916.

INVENTOR ing or complete closure.

UNITED s ratrns PATENT OFFICE WILLIAM n nNNEnY, or OAKLAND, CALIFORNIA.

WINDOW-LOCK;

Specification of Letters Patent. l Patented M31, 28, 1916,

Application filed June 1, 1915. Serial No; 31,613. 1

To all whom it may concern Be it known that I, \VILLIAM D. KnN- NEDY, acitizen of the United States, residing at Oakland, in the county ofAlameda and State of California, have invented new and usefulImprovements in Window-Locks, of which the following 1s a specification.

This invention relates to a window lock- One of the objects of thepresent mvention is. to provide a simple, substantial,

Further objects will hereinafter appear.

The inventionconsists of the parts and the construction and combinationof parts as hereinafter more fully described and claimed, havingreference to the accompanying drawings, in which Figure 1 is aperspective view of the window lock. Fig. 2 is a section on line 2:2 ofFig. 4t. Fig. 3 is a section on line 3-3 of Fig. 4:- Fig. 4 is a planview, showing the window lock attached and secured t the upper rail ofthe lower sash.

A indicates a base plate, one end of which is slotted, as at 2, and bentat right angles to form a pair of down turned, hook-like projections 3which are adapted to be inserted between the sash and easing, as indi-,eated in Fig. 4. The other end of the base plate is out and bent to forma stop 5 and a pair of lugs 6 in which is pivotallymountedalongitudinally disposed locking member 7. Pivotally mounted in lugs 8,formed on the side of the base plate,.is a second locking member 9disposed transversely with relation to member 7 and on a plane belowsame. One end of member 9 is provided with an extension 10 which servesas a lever to raise or lower members 7 and 9 in unison, and the outerend of member 7 is slotted, as at 11, as hereinafter described.

In operation, the lock is placed on the upper rail of the lower windowsash, as indicated in'Fig. l, in a position where the projections 3 maybe inserted between the. sash and the window casing indicated-at 12.

One or more screws, such as indicated at 13, r

are then screwed through the base plate A, causing, it to be securelyfastened on the upper rail of the {lower window Sash. A rackshapedbar-14 is then suitably secured to the side of'theuppersashto cooperatewith a locking member9 as will hereinafter be described: l/Viththelowersash closed, it is only necessaryto drop the locking member 7 down intoa position whereIits inner slotted end 11 will contactwith the face ofthe window casing 12. An .upward'movement ofv the lower sash would thenbe impossible, as the pointed ends 15 of the'lever 7 standing-on anincline would immediately become embedded in the face ofv the casing,thus securely locking the lower sash against upward movement. Thelowermost. locking member 9 may at the same time be dropped intoposition against'the rack bar 14:, thus causing the upper sash to belocked against downward movement,as a downward movement or pressure onthe upper sash would only tend to force theupper and lower sashes apartand only cause them to be more securely locked. The

' position of both members 7r and 9 is always angular whether inengagement with the casing or the, sash. This angular position of thelocking members is of con siderable importance as it produces aleverlike action when pressure is applied which causesthe lockingmembers to become more securely engaged. Either sash may be lockedagainst opening at any intermediate point between'a full opening or acomplete closure, if desired, as the rackbar 14. may be suflicientlylong to cover the full length of the upper sash. When it is desired torelease the locking members, it is accomplished by applying a downwardpressure upon the lever extension 10. This will first lift member 9 outof engagement with the rack bar and then cause it to engage the upperlocking member 7 and raise this out of engagement with the casing. Thelocking members are otherwise self looking, as they will immediatelydrop back into position whether the sashes are opened or closed themomentlever extension 10 is relieved of pressure.

A window lock constructed as here shown is simple and substantial inconstruction and may be cheaply manufactured as it may bestampedorformed out of comparatively thin sheet metal or like material. It notonly forms a'locking unit .for both sashes, preventing openingjofthe-latter, but also serves as an ant1-rattling device, as it always hasa tendency to force the'sashes against I claim and desire to secure. byLetters I Patent is 1. In a window look, a base element, a lower rigidplatepivoted between its ends to said element and adapted to extend atan angle to the element when in locking position, and an .upperrigidplate :pivoted to said element and disposed at substantially rightangles to thelower plateand being:

capable of being engaged by the lower plate and when, in lockingposition-zextendiing, at: an angle to the element, the inner endofg thelowerplate-forming a hand grip where: 1 by upon depression tl'lBI'QOfi bothof the plates will be raised :up to cause their :outer: ends to be movedout of locking positions.

2,111 a window lock, a base, a painiofrmovable lock members on the basearranged '1 in superposed relation, and means connected on thelowersash, a pair of rigid locklmem -z each when in locking positionextendingzat an'angle to the base and having their outer endsconstituting means to engage the frame;

and upper sash, and: a finger engaging part, on the lower member whichupon :depres-:.

sion thereof causes said ends-of ithe mem-iz bers to be'ralsedup tounlockmgpositi'ons In testnnonywhereof I have ihereuntoisets my hand inthe presence of .tWo subscribing;

witnesses. V W ILLIAIVL D. KENNEDY.-

Witnesses Copies of this patent mayfne obtained for five cents each,.byaddressinggthei fcommissioner of Patentzg;

' Washington, 20. 0.?

